Scholarlink

<p>This study looks at the impact of molybdenum (Mo) weight fraction on the microstructural refinement and tribological performance of friction stir processed (FSPed) AA7075 surface composites. The results show that Mo addition considerably affects particle distribution and precipitation behavior, influencing friction and wear mechanisms. Among the tested conditions, the 2&#xa0;wt.% Mo composites had the most uniform particle dispersion, refined grain structure, and steady precipitation, resulting in the lowest coefficient of friction and wear rate under 20N and 40N loads. In contrast, 1&#xa0;wt.% Mo demonstrated limited reinforcing efficiency, and 3&#xa0;wt.% Mo caused particle accumulation, microstructural variability, and severe abrasive wear. Worn surface investigations revealed a transition from adhesive wear at low Mo content to mild abrasive wear at the optimal level, and to third-body abrasion at high reinforcement. The findings show 2&#xa0;wt.% Mo as the optimal reinforcement level for improving tribological stability in FSPed AA7075 composites.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Role of Mo Weight Fraction on Microstructure Refinement and Wear Mechanisms in Friction Stir Processed AA7075

  • 期刊论文

  • 发表日期：

    2026年3月19日

查看全文
  • Kadapa Vijaya Bhaskar Reddy,
  • Varsala Pragna,
  • Anusha Mylavarapu,
  • P. Prakash,
  • Anjani Devi Sanipina,
  • Y. Shireesha,
  • K. Rajesh

摘要

This study looks at the impact of molybdenum (Mo) weight fraction on the microstructural refinement and tribological performance of friction stir processed (FSPed) AA7075 surface composites. The results show that Mo addition considerably affects particle distribution and precipitation behavior, influencing friction and wear mechanisms. Among the tested conditions, the 2 wt.% Mo composites had the most uniform particle dispersion, refined grain structure, and steady precipitation, resulting in the lowest coefficient of friction and wear rate under 20N and 40N loads. In contrast, 1 wt.% Mo demonstrated limited reinforcing efficiency, and 3 wt.% Mo caused particle accumulation, microstructural variability, and severe abrasive wear. Worn surface investigations revealed a transition from adhesive wear at low Mo content to mild abrasive wear at the optimal level, and to third-body abrasion at high reinforcement. The findings show 2 wt.% Mo as the optimal reinforcement level for improving tribological stability in FSPed AA7075 composites.